not much happened today

**Poolside** raised **$1B** at a **$12B valuation**. **Eric Zelikman** raised **$1B** after leaving **Xai**. **Weavy** joined **Figma**. New research highlights **FP16** precision reduces training-inference mismatch in **reinforcement-learning** fine-tuning compared to **BF16**. **Kimi AI** introduced a hybrid **KDA (Kimi Delta Attention)** architecture improving long-context throughput and RL stability, alongside a new **Kimi CLI** for coding with agent protocol support. **OpenAI** previewed Agent Mode in ChatGPT enabling autonomous research and planning during browsing.